Sample data based on data from Parshall et al. (2002) used for the demonstration of the Weighted (positive) Deviations Method (WDM).
metadata_exampleA data frame with 10 rows and 10 variables:
Unique item identifier, integer.
Content label, as factor identifying content "A" and "B".
Dummy code for content "A", 0 and 1 indicators.
Dummy code for content "B", 0 and 1 indicators.
Item proportion correct responding, rounded decimal.
Item-total point biserial correlation, rounded decimal correlation in range -1.00 to 1.00.
Item contribution to total composite standard deviation, double precision numeric.
Expected item response time, in minutes.
Item set ID--initial, unique item set name.
Item set ID--modified, unique item set name.
Parshall, C. G., et al. (2002). Automated test assembly for online administration. In C. G. Parshall, J. A. Spray, J. C. Kalohn, & T. Davey, Practical considerations in computer based testing (pp.106-125). New York, NY: Springer-Verlag New York, Inc.